Organic fertilizer recommended.

Hey! Well if your also using soil from bio bizz light mix or all mix.. they are premixed soils that you don't need to add nutrients for the first 3-4 weeks. If your soil isn't priorly mixed then you'll need to add nutes. Either way it's you follow the doses sugguested by bio bizz.. instead of starting with a full dose maybe start with 1/4. Hope this helped. Good luck and happy growing!